HIGH 7.0 Microsoft
CVE-2025-39851
vxlan: Fix NPD when refreshing an FDB entry with a nexthop object
Microsoft Security Update 2025-Sep: vxlan: Fix NPD when refreshing an FDB entry with a nexthop object
Affected Products
- azl3 kernel 6.6.117.1-1 on Azure Linux 3.0
- cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0
- azl3 kernel 6.6.121.1-1 on Azure Linux 3.0
- cbl2 kernel 5.15.200.1-1 on CBL Mariner 2.0
- azl3 kernel 6.6.130.1-3 on Azure Linux 3.0
- cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0
- azl3 kernel 6.6.143.1-1 on Azure Linux 3.0
- azl3 kernel 6.6.144.1-1 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-39851
- https://nvd.nist.gov/vuln/detail/CVE-2025-39851
This high severity vulnerability with a CVSS score of 7.0 was published on 2025-09-09 via Microsoft. Affected: azl3 kernel 6.6.117.1-1 on Azure Linux 3.0, cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0, azl3 kernel 6.6.121.1-1 on Azure Linux 3.0 and 5 more.
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